Conduit connecter



sept. 1s, 1928 1,684,826

J. E. HILL coNDUIT CONNECTER Filed Jan. 51, 1927 FIGHQ Patented Sept. 18, 1928.

' UNITED sTA'rs-s JOSEPH E. HILL, 0F DETROT, MICHIGAN.

CONDUIT CONNECTER.

Application led January 31, 1927. Serial No. 164,792.

associated with either a conduit box or a.

coupling tube and constructed in. such a manner that the conduit will be iirmly secured in the device to which it is connected. y n

In the accomplishment of this object the invention comprises a threaded tubular mehr` ber containing a partly split sleeve. One end Vof the sleeve is titted with a tapered head, and the split permits contraction et the hea-d when pressure is applied thereto. rThe inner tace of the head is formed with circular ribs for engaging the pipe conduit inserted in the sleeve. Over the threaded member is screwed a nut having conical socket bearing on the tapered head. As the vnut is screwed on the threaded member, a wedging action occurs between the wall of the conical socket and the tapered head, whereby the split head is pressed tightly against the pipe and thek engagement between the parts is improved by the interior ribs.

rlhe invention is fully disclosed in the iollowing description and in the accompanying drawings, in which Figure 1 is an elevation partly in section, of a device constructed in accordance with the invention; n

Fig. 2 is an elevation partly the locking sleeve;

Fig. 8 is a diametrical section of the locking nut, and

Fig. 4 is a longitudinal sectional view of a modified construction. '1

Reference to these views will now loe-had by use of like characters which 'will be e1nployed to designate corresponding parts throughout.

Figure 1 shows a junction or-terminal box designated by the numerall and having at each end an exterior threaded nipple 3 adapted to receive a pipe conduit 4 for protecting conductors.

The external diameter of the pipe 4 is less than the internal diameter of the member 3,

in section of and the intervening space is occupied by a locking sleeve 5 oit the type shown in Fig. 2.

rllhe other end is termed with a tapered headY 7 at the base ot which is a shoulder 8 adapted to engage the outer end of the nipple 3 as clearly shown in Fig. 1. A diametrical slot 9 is cutthrough the head and extends into the sleeve 5 as indicated by the numeral 10. Further, the interior of the head is provided with a series ot circular ribs 11 adapted to bear on the pipe 4.

Fitted over the threaded'member 3 is a nut 12 having a conical socket 18 communicating with the threaded bore 14 thereof'. rlhe wall ot the soclet engages the tapered head and effects a wedging action therewith, as a result of which the ribs 11, due to the compression'permitted by the slot 9, 10, are brought firmly against the conduit 4 as the nut is threaded'on the nipple 3. Y

A modification of the invention is shown in 4 which illustrates the locking and clamping device used as part of a coupling for the several conduits. inserted at one end ot a tube 16 which is threaded eXteriorly at both ends as at 17, and the line may be continued by the insertion of a similar conduit at the other end of the tube. Between the outer wall and the tube is placed a sleeve 5 having a tapered head 7 similar to the construction described in connection with Fig. 2. A nut l12 having a conical socket 13 is fitted over the threaded end 17 in such a manner that the socket 13 receives the head 7. The action of the nuton the sleeve yis similar to that already pointed out in detail.

Although the speciiic embodiments of the invention have been illustrated and described, it will be apparent that various alterations and modiiications in the details of construction may be made without departing from the scope-ot the invention as expressed by the appended claims.

V1. In combination with a hollow threaded member, a sleeve fitted in said member, a tapered head-formed on one end of said sleeve and disposed outside said member, a nut threaded on said member and having a conirlhe conduit 15 isv cal socket receiving said head, and an inwardly extending stop ange formed at the remaining end of said sleeve.

2. In combination with a hollow threaded 5 member, a sleeve fitted in said member, a

tapered head formed on one end of said sleeve and abutting one end of said member exterorly, a nut threaded on said member and having a conical socket receiving said head,

JOSEPH E. HILL; 

